Nokia 3105 Servicehandbuch
RH-48
Troubleshooting - RF
CCS Technical Documentation
Page 28
©
2003 Nokia Corporation Confidential
Issue 1 11/2003
Rx AGC (Cell mode)
The following Rx RF AGC PDM vs AGC Voltage table shows the Rx RF AGC PDM vs AGC
voltages in local mode on channel 384.
voltages in local mode on channel 384.
Rx RF AGC PDM vs AGC Voltage
Rx RF AGC
PDM
Typical
Value
Test Point
-512
0.08
right R702
-400
0.260
-300
0.436
-200
0.597
-100
0.753
0
0.913
100
1.076
200
1.24
300
1.403
350
1.494
400
1.570
500
1.740
511
1.761
UNITS
VDC
Rx AGC vs RF Pin for CELL Band
Conn RF
Pin
CELL
RF AGC
Comments
-25
1.492
-35
1.298
-45
1.159
In Normal mode, the phone will adjust RF RX
AGC
AGC
-55
1.019
Rx power is coming in, the I and Q will be about
0.5Vpp and 1.3V
0.5Vpp and 1.3V
-65
0.861
-75
0.705
Approximately 1pdm per 1mV
-85
0.530
-92
0.425